Estimate each of the following products by rounding off the first numb

1.	Estimate each of the following products by rounding off the first number downwards and the second number upwards 356×278
Answer» Answer: Answer: Step-by-step explanation: 356 x 278 472 x 76 578 x 369 356 x 278 = (300 + 56)(300 - 22) = 90000 + 300(56 -22) - 56 22 = 90000 + 300(34) - 5622 = 90000 + 10200 - 1232 = 98968 472 * 76 = (400 + 72)(100 -24) = 40000 - 400 * 24 + 10072 - 24 72 = 40000 - 9600 + 7200 - 1728 = 35872 578 * 369 = (500 + 78) * (400 - 31) = 200000 - 50031 + 78400 - 78*31 = 213282 I HOPE it's help you. plz like my answer.

Estimate each of the following products by rounding off the first number downwards and the second number upwards 356×278

Answer»

Answer:

Answer:

Step-by-step explanation:

356 x 278

472 x 76

578 x 369

356 x 278

= (300 + 56)(300 - 22)

= 90000 + 300(56 -22) - 56 *22

= 90000 + 300(34) - 56*22

= 90000 + 10200 - 1232

= 98968

472 * 76

= (400 + 72)(100 -24)

= 40000 - 400 * 24 + 100*72 - 24 * 72

= 40000 - 9600 + 7200 - 1728

= 35872

578 * 369

= (500 + 78) * (400 - 31)

= 200000 - 500*31 + 78*400 - 78*31

= 213282

I HOPE it's help you.

plz like my answer.

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